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A hydrogenation process for producing hydrogen peroxide by anthraquinone method

An anthraquinone method, hydrogen peroxide technology, applied in the directions of peroxide/peroxyhydrate/peroxyacid/superoxide/ozone, inorganic chemistry, chemical instruments and methods, etc., to reduce production costs and improve selectivity , the effect of improving the quality level

Active Publication Date: 2016-06-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the progress of the reaction and the diffusion movement of the gas, the large bubbles will gradually grow up and become a continuous phase, which also does not fundamentally solve the phenomenon of local overhydrogenation.

Method used

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  • A hydrogenation process for producing hydrogen peroxide by anthraquinone method
  • A hydrogenation process for producing hydrogen peroxide by anthraquinone method

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The hydrogenation reactor is filled with three stages of catalysts, from top to bottom are the catalyst beds I, II and III. The hydrogen is divided into three streams of hydrogen I, II and III and introduced into the reactor respectively. The hydrogenation temperature is 42°C and the hydrogenation pressure is 0.23 MPa. First all working liquid and hydrogen I flow into the reactor from the top of the reactor concurrently, hydrogenation reaction occurs in catalyst bed I, and the volume flow rate of hydrogen I and total hydrogen (Nm 3 / h) ratio is 1:3.78, the residence time of the material in the catalyst bed I is 3.05 minutes; the volume flow rate of hydrogen II and total hydrogen (Nm 3 / h) ratio is 1:1.97, the material residence time of the material in the catalyst bed II is 1.64 minutes; the volume ratio of the hydrogen III introduced by the catalyst bed III to the total hydrogen is 1:4.96, the material in the catalyst bed III The residence time was 1.5 minutes. After...

Embodiment 2

[0031] The hydrogenation reactor is filled with three stages of catalysts, which are catalyst beds I, II and III from top to bottom. The working liquid is divided into two streams of working liquid I and II, and the hydrogen is divided into three streams of hydrogen gas I, II and III to be introduced into the reaction. device, the hydrogenation temperature is 45°C, and the hydrogenation pressure is 0.25Mpa. The working liquid I and the hydrogen gas I flow into the reactor from the top of the reactor concurrently, and a hydrogenation reaction occurs on the catalyst bed I. Volume flow of working fluid I and total working fluid (m 3 / h) ratio is 1:1.24, the volume flow rate of hydrogen I to total hydrogen (m 3 / h) ratio is 1:2.8, the material residence time in catalyst bed I is 2.25 minutes; the volume flow rate of working fluid II and total working fluid (m 3 / h) ratio is 1:5.21, the volume flow rate of hydrogen and total hydrogen in catalyst bed II (m 3 / h) ratio is 1:2.69, t...

Embodiment 3

[0033] The hydrogenation reactor is filled with four stages of catalysts, which are catalyst beds I, II, III and IV from top to bottom. The working liquid is divided into three streams of working liquid I, II and III, and the hydrogen is divided into hydrogen I, II and III. The four strands and IV are introduced into the reactor, the hydrogenation temperature is 43°C, and the hydrogenation pressure is 0.2Mpa. The working liquid I and the hydrogen gas I flow into the reactor from the top of the reaction side by side, and the hydrogenation reaction occurs in the catalyst bed I. Volume flow of working fluid I and total working fluid (m 3 / h) ratio is 1:1.84, the volume flow rate of hydrogen I to total hydrogen (Nm 3 / h) ratio is 1:4.66, the material residence time in catalyst bed I is 1.94 minutes; the volume flow rate of working fluid II and total working fluid (m 3 / h) ratio is 1:4.38, the volume flow rate of hydrogen II to total hydrogen (Nm 3 / h) ratio is 1:5.7, the materi...

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Abstract

The invention discloses a hydrogenation technology for producing hydrogen peroxide by an anthraquinone process, which comprises the following steps: operating fluid and hydrogen-containing gas in the hydrogenation technology for producing hydrogen peroxide by the anthraquinone process are introduced in a reactor along flowing direction of materials in the reactor, a hydrogenation reaction is carried out on a bed layer of a catalyst, each strand of operating fluid corresponds a strand of hydrogen-containing gas, wherein hydrogen-containing gas is divided into 2-10 strands, the strand number of operating fluid is less than that of the hydrogen-containing gas, The last strand of the material long the flowing direction of the material is the hydrogen-containing gas. The technology can effectively avoid the excessive hydrogenation, increase hydrogen effect and prolong the usage life of the catalyst.

Description

technical field [0001] The invention relates to a hydrogen peroxide production process, in particular to a hydrogenation process for producing hydrogen peroxide by an anthraquinone method. Background technique [0002] At present, the industrial production of hydrogen peroxide mainly adopts the anthraquinone method. The production process of hydrogen peroxide by the anthraquinone method generally uses 2-ethylanthraquinone (EAQ) as the working carrier, and heavy aromatics (Ar) and trioctyl phosphate (TOP) as solvents. into a working solution, after hydrogenation, oxidation, extraction and post-treatment of the working solution, the hydrogen peroxide product is obtained. The hydrogenation process refers to the hydrogenation reaction of EAQ in the working solution with hydrogen in the presence of a palladium catalyst to generate 2-ethylhydroanthraquinone (HEAQ). [0003] The uneven hydrogenation reaction process will lead to excessive hydrogenation of anthraquinone and produce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B15/023
CPCC01B15/023
Inventor 杨秀娜齐慧敏高景山张英
Owner CHINA PETROLEUM & CHEM CORP
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